[PATCH 3.14 225/238] netfilter: x_tables: allow to use default cgroup match

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3.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Daniel Borkmann <dborkman@xxxxxxxxxx>

commit caa8ad94edf686d02b555c65a6162c0d1b434958 upstream.

There's actually no good reason why we cannot use cgroup id 0,
so lets just remove this artificial barrier.

Reported-by: Alexey Perevalov <a.perevalov@xxxxxxxxxxx>
Signed-off-by: Daniel Borkmann <dborkman@xxxxxxxxxx>
Tested-by: Alexey Perevalov <a.perevalov@xxxxxxxxxxx>
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 net/netfilter/xt_cgroup.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/netfilter/xt_cgroup.c
+++ b/net/netfilter/xt_cgroup.c
@@ -31,7 +31,7 @@ static int cgroup_mt_check(const struct
 	if (info->invert & ~1)
 		return -EINVAL;
 
-	return info->id ? 0 : -EINVAL;
+	return 0;
 }
 
 static bool


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